Water fountain



FIG. 1 is a front perspective view of a water fountain showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a side elevational view thereof, with the opposite side being a mirror image;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a top view thereof.

The broken lines and surface shading shown in all figures are for illustrative enviromental purposes only and form no part of the claimed design. 

The ornamental design for a water fountain, as shown and described. 